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| author | Sam Ravnborg <sam@ravnborg.org> | 2011-12-27 21:46:53 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-01 08:56:40 -0700 |
| commit | 7a0db699f49f9045484cf256316689cd6668f949 (patch) | |
| tree | 8a183e5aa2bf1c019c8eb5bb7db37e80a0601bfd /arch/sparc | |
| parent | 8a53479a31bed3ef13f55c6752cb1a3962affcff (diff) | |
| download | lwn-7a0db699f49f9045484cf256316689cd6668f949.tar.gz lwn-7a0db699f49f9045484cf256316689cd6668f949.zip | |
sparc32: support atomic64_t
commit aea1181b0bd0a09c54546399768f359d1e198e45 upstream, Needed to
compile ext4 for sparc32 since commit
503f4bdcc078e7abee273a85ce322de81b18a224
There is no-one that really require atomic64_t support on sparc32.
But several drivers fails to build without proper atomic64 support.
And for an allyesconfig build for sparc32 this is annoying.
Include the generic atomic64_t support for sparc32.
This has a text footprint cost:
$size vmlinux (before atomic64_t support)
text data bss dec hex filename
3578860 134260 108781 3821901 3a514d vmlinux
$size vmlinux (after atomic64_t support)
text data bss dec hex filename
3579892 130684 108781 3819357 3a475d vmlinux
text increase (3579892 - 3578860) = 1032 bytes
data decreases - but I fail to explain why!
I have rebuild twice to check my numbers.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/Kconfig | 1 | ||||
| -rw-r--r-- | arch/sparc/include/asm/atomic_32.h | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 9e702570001d..bc31e5ec1c23 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -31,6 +31,7 @@ config SPARC config SPARC32 def_bool !64BIT + select GENERIC_ATOMIC64 config SPARC64 def_bool 64BIT diff --git a/arch/sparc/include/asm/atomic_32.h b/arch/sparc/include/asm/atomic_32.h index 7ae128b19d3f..98f223a102c4 100644 --- a/arch/sparc/include/asm/atomic_32.h +++ b/arch/sparc/include/asm/atomic_32.h @@ -15,6 +15,8 @@ #ifdef __KERNEL__ +#include <asm-generic/atomic64.h> + #include <asm/system.h> #define ATOMIC_INIT(i) { (i) } |